LP38691SD-5.0/NOPB National Semiconductor, LP38691SD-5.0/NOPB Datasheet

IC REG LDO 500MA 5.0V 6LLP

LP38691SD-5.0/NOPB

Manufacturer Part Number
LP38691SD-5.0/NOPB
Description
IC REG LDO 500MA 5.0V 6LLP
Manufacturer
National Semiconductor
Series
PowerWise®r
Datasheet

Specifications of LP38691SD-5.0/NOPB

Regulator Topology
Positive Fixed
Voltage - Output
5V
Voltage - Input
Up to 10V
Voltage - Dropout (typical)
0.25V @ 500mA
Number Of Regulators
1
Current - Output
500mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
6-LLP
Number Of Outputs
1
Polarity
Positive
Input Voltage Max
10 V
Output Voltage
5 V
Output Type
Fixed
Dropout Voltage (max)
0.1 V at 100 mA
Output Current
0.5 A
Line Regulation
0.03 %/V
Load Regulation
1.8 %/A
Voltage Regulation Accuracy
+/- 2 %
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
Lead Free Status / Rohs Status
 Details
Other names
LP38691SD-5.0
LP38691SD-5.0TR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LP38691SD-5.0/NOPB
Manufacturer:
NS
Quantity:
3 130
Part Number:
LP38691SD-5.0/NOPB
0
© 2010 National Semiconductor Corporation
500mA Low Dropout CMOS Linear Regulators
Stable with Ceramic Output Capacitors
General Description
The LP38691/3 low dropout CMOS linear regulators provide
tight output tolerance (2.0% typical), extremely low dropout
voltage (250 mV @ 500mA load current, V
cellent AC performance utilizing ultra low ESR ceramic output
capacitors.
The low thermal resistance of the LLP, SOT-223 and TO-252
packages allow the full operating current to be used even in
high ambient temperature environments.
The use of a PMOS power transistor means that no DC base
drive current is required to bias it allowing ground pin current
to remain below 100 µA regardless of load current, input volt-
age, or operating temperature.
Dropout Voltage: 250 mV (typ) @ 500mA (typ. 5V out).
Ground Pin Current: 55 µA (typ) at full load.
Precision Output Voltage: 2.0% (25°C) accuracy.
Typical Application Circuits
Note: * Minimum value required for stability.
**LLP package devices only.
201265
OUT
= 5V), and ex-
LP38691
LP38693
Features
Applications
2.0% output accuracy (25°C)
Low dropout voltage: 250 mV @ 500mA (typ, 5V out)
Wide input voltage range (2.7V to 10V)
Precision (trimmed) bandgap reference
Guaranteed specs for -40°C to +125°C
1µA off-state quiescent current
Thermal overload protection
Foldback current limiting
T0-252, SOT-223 and 6-Lead LLP packages
Enable pin (LP38693)
Hard Disk Drives
Notebook Computers
Battery Powered Devices
Portable Instrumentation
20126501
20126502
December 14, 2010
www.national.com

Related parts for LP38691SD-5.0/NOPB

LP38691SD-5.0/NOPB Summary of contents

Page 1

... Dropout Voltage: 250 mV (typ) @ 500mA (typ. 5V out). Ground Pin Current: 55 µA (typ) at full load. Precision Output Voltage: 2.0% (25°C) accuracy. Typical Application Circuits Note: * Minimum value required for stability. **LLP package devices only. © 2010 National Semiconductor Corporation LP38691 LP38693 Features ■ 2.0% output accuracy (25°C) ■ ...

Page 2

... Connection Diagrams TO-252, Top View LP38691DT-X.X 6-Lead LLP, Top View LP38691SD-X.X Pin Descriptions Pin V This is the input supply voltage to the regulator. For LLP devices, both V IN for full current operation (250mA maximum per pin). GND Circuit ground for the regulator. For the TO-252 and SOT-223 packages this is thermally connected to the die and functions as a heat sink when the soldered down to a large copper plane ...

Page 3

... LP38691DT-5.0 LP38691DT-5.0 LP38693SD-1.8 L128B LP38693SD-2.5 L129B LP38693SD-3.3 L130B LP38693SD-5.0 L131B LP38693MP-1.8 LJVB LP38693MP-2.5 LJXB LP38693MP-3.3 LJYB LP38693MP-5.0 LJZB LP38691SDX-1.8 L118B LP38691SDX-2.5 L119B LP38691SDX-3.3 L120B LP38691SDX-5.0 L121B LP38691DTX-1.8 LP38691DT-1.8 LP38691DTX-2.5 LP38691DT-2.5 LP38691DTX-3.3 LP38691DT-3.3 LP38691DTX-5.0 LP38691DT-5.0 LP38693SDX-1.8 L128B LP38693SDX-2.5 L129B LP38693SDX-3.3 L130B LP38693SDX-5.0 L131B LP38693MPX-1 ...

Page 4

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Storage Temperature Range Lead Temp. (Soldering, 5 seconds) ESD Rating (Note 3) Power Dissipation (Note 2) Electrical Characteristics the full operating temperature range. Unless otherwise specified: V limits are guaranteed through testing, statistical correlation, or design ...

Page 5

Symbol Parameter e Output Noise n V (LEAK) Output Leakage Current O V Enable Voltage (LP38693 Only Enable Pin Leakage (LP38693 EN Only) Note 1: Absolute maximum ratings indicate limits beyond which damage to the component may occur. ...

Page 6

Block Diagrams www.national.com FIGURE 1. LP38691 Functional Diagram (LLP) FIGURE 2. LP38691 Functional Diagram (TO-252) 6 20126507 20126508 ...

Page 7

FIGURE 3. LP38693 Functional Diagram (LLP) FIGURE 4. LP38693 Functional Diagram (SOT-223) 7 20126509 20126510 www.national.com ...

Page 8

Typical Performance Characteristics pin is tied to V (LP38693 only OUT Noise vs Frequency Noise vs Frequency Ripple Rejection www.national.com Unless otherwise specified 1.8V +1V 10mA. IN OUT L 20126535 20126537 ...

Page 9

Line Transient Response 20126524 Line Transient Response 20126528 Load Transient Response 20126544 Line Transient Response Load Transient Response V vs Temperature (5.0V) OUT 9 20126526 20126542 20126530 www.national.com ...

Page 10

V vs Temperature (3.3V) OUT V vs Temperature (1.8V) OUT Power-Up OUT IN www.national.com V vs Temperature (2.5V) OUT 20126531 V OUT 20126533 OUT 20126560 10 20126532 vs V (1.8V) IN 20126559 , ...

Page 11

OFF (LP38693 Only) OUT EN 20126562 Load Regulation vs Temperature 20126553 MIN OUT 20126557 Enable Voltage vs Temperature Line Regulation vs Temperature Dropout Voltage 20126552 20126554 OUT 20126556 www.national.com ...

Page 12

Application Hints EXTERNAL CAPACITORS Like any low-dropout regulator, external capacitors are re- quired to assure stability. These capacitors must be correctly selected for proper performance. INPUT CAPACITOR: An input capacitor of at least 1µF is re- quired (ceramic recommended). The ...

Page 13

... LLP package, the junction-to-case thermal rating, θJC, is 10.4°C/W, where the case is the bottom of the package at the center of the DAP. The junction-to-ambient thermal perfor- mance for the LP38691SD and LP38693SD in the SDE06A 6-Lead LLP package, using the JEDEC JESD51 standards is summarized in the following table: ...

Page 14

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 6-lead, LLP Package NS Package Number SDE06A TO-252 Package NS Package Number TD03B 14 ...

Page 15

SOT-223 Package NS Package Number MP05A 15 www.national.com ...

Page 16

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